Pillow



FIG. 1 is a top, front, and left side perspective view of a pillow showing my new design;

FIG. 2 is a bottom, rear, and right side perspective view thereof;

FIG. 3 is a front elevational view thereof; and,

FIG. 4 is a right side elevational view thereof, the left side being a mirror image of that shown. 

The ornamental design for a pillow, as shown and described. 